APA (7th ed.) Citation

Fuentes, C., & Peden, M. S. (1979). The hydra head. Secker and Warburg.

Chicago Style (17th ed.) Citation

Fuentes, Carlos, and Margaret Sayers Peden. The Hydra Head. London: Secker and Warburg, 1979.

MLA (8th ed.) Citation

Fuentes, Carlos, and Margaret Sayers Peden. The Hydra Head. Secker and Warburg, 1979.